Rev 164 | Rev 188 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 164 | Rev 178 | ||
---|---|---|---|
Line -... | Line 1... | ||
- | 1 | /* |
|
- | 2 | * Copyright (C) 2001-2004 Jakub Jermar |
|
- | 3 | * All rights reserved. |
|
- | 4 | * |
|
- | 5 | * Redistribution and use in source and binary forms, with or without |
|
- | 6 | * modification, are permitted provided that the following conditions |
|
- | 7 | * are met: |
|
- | 8 | * |
|
- | 9 | * - Redistributions of source code must retain the above copyright |
|
- | 10 | * notice, this list of conditions and the following disclaimer. |
|
- | 11 | * - Redistributions in binary form must reproduce the above copyright |
|
- | 12 | * notice, this list of conditions and the following disclaimer in the |
|
- | 13 | * documentation and/or other materials provided with the distribution. |
|
- | 14 | * - The name of the author may not be used to endorse or promote products |
|
- | 15 | * derived from this software without specific prior written permission. |
|
- | 16 | * |
|
- | 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
|
- | 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
|
- | 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
|
- | 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
|
- | 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
|
- | 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
- | 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
- | 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
- | 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
|
- | 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
- | 27 | */ |
|
- | 28 | ||
- | 29 | #ifndef __PM_H__ |
|
- | 30 | #define __PM_H__ |
|
- | 31 | ||
- | 32 | #include <arch/types.h> |
|
- | 33 | #include <typedefs.h> |
|
- | 34 | #include <arch/context.h> |
|
- | 35 | ||
- | 36 | #define IDT_ITEMS 64 |
|
- | 37 | #define GDT_ITEMS 6 |
|
- | 38 | ||
- | 39 | #define NULL_DES 0 |
|
- | 40 | #define KTEXT_DES 1 |
|
- | 41 | #define KDATA_DES 2 |
|
- | 42 | #define UTEXT_DES 3 |
|
- | 43 | #define UDATA_DES 4 |
|
- | 44 | #define TSS_DES 5 |
|
- | 45 | ||
- | 46 | #define selector(des) ((des)<<3) |
|
- | 47 | ||
- | 48 | #define PL_KERNEL 0 |
|
- | 49 | #define PL_USER 3 |
|
- | 50 | ||
- | 51 | #define AR_PRESENT (1<<7) |
|
- | 52 | #define AR_DATA (2<<3) |
|
- | 53 | #define AR_CODE (3<<3) |
|
- | 54 | #define AR_WRITABLE (1<<1) |
|
- | 55 | #define AR_INTERRUPT (0xe) |
|
- | 56 | #define AR_TSS (0x9) |
|
- | 57 | ||
- | 58 | #define DPL_KERNEL (PL_KERNEL<<5) |
|
- | 59 | #define DPL_USER (PL_USER<<5) |
|
- | 60 | ||
- | 61 | #define IO_MAP_BASE (104) |
|
- | 62 | ||
- | 63 | struct ptr_16_32 { |
|
- | 64 | __u16 limit; |
|
- | 65 | __u32 base; |
|
- | 66 | } __attribute__ ((packed)); |
|
- | 67 | ||
- | 68 | struct descriptor { |
|
- | 69 | unsigned limit_0_15: 16; |
|
- | 70 | unsigned base_0_15: 16; |
|
- | 71 | unsigned base_16_23: 8; |
|
- | 72 | unsigned access: 8; |
|
- | 73 | unsigned limit_16_19: 4; |
|
- | 74 | unsigned available: 1; |
|
- | 75 | unsigned longmode: 1; |
|
- | 76 | unsigned special: 1; |
|
- | 77 | unsigned granularity : 1; |
|
- | 78 | unsigned base_24_31: 8; |
|
- | 79 | } __attribute__ ((packed)); |
|
- | 80 | ||
- | 81 | struct idescriptor { |
|
- | 82 | unsigned offset_0_15: 16; |
|
- | 83 | unsigned selector: 16; |
|
- | 84 | unsigned unused: 8; |
|
- | 85 | unsigned access: 8; |
|
- | 86 | unsigned offset_16_31: 16; |
|
- | 87 | } __attribute__ ((packed)); |
|
- | 88 | ||
- | 89 | ||
- | 90 | struct tss { |
|
- | 91 | __u16 link; |
|
- | 92 | unsigned : 16; |
|
- | 93 | __u32 esp0; |
|
- | 94 | __u16 ss0; |
|
- | 95 | unsigned : 16; |
|
- | 96 | __u32 esp1; |
|
- | 97 | __u16 ss1; |
|
- | 98 | unsigned : 16; |
|
- | 99 | __u32 esp2; |
|
- | 100 | __u16 ss2; |
|
- | 101 | unsigned : 16; |
|
- | 102 | __u32 cr3; |
|
- | 103 | __u32 eip; |
|
- | 104 | __u32 eflags; |
|
- | 105 | __u32 eax; |
|
- | 106 | __u32 ecx; |
|
- | 107 | __u32 edx; |
|
- | 108 | __u32 ebx; |
|
- | 109 | __u32 esp; |
|
- | 110 | __u32 ebp; |
|
- | 111 | __u32 esi; |
|
- | 112 | __u32 edi; |
|
- | 113 | __u16 es; |
|
- | 114 | unsigned : 16; |
|
- | 115 | __u16 cs; |
|
- | 116 | unsigned : 16; |
|
- | 117 | __u16 ss; |
|
- | 118 | unsigned : 16; |
|
- | 119 | __u16 ds; |
|
- | 120 | unsigned : 16; |
|
- | 121 | __u16 fs; |
|
- | 122 | unsigned : 16; |
|
- | 123 | __u16 gs; |
|
- | 124 | unsigned : 16; |
|
- | 125 | __u16 ldtr; |
|
- | 126 | unsigned : 16; |
|
- | 127 | unsigned : 16; |
|
- | 128 | __u16 io_map_base; |
|
- | 129 | } __attribute__ ((packed)); |
|
- | 130 | ||
- | 131 | extern struct ptr_16_32 gdtr; |
|
- | 132 | extern struct tss *tss_p; |
|
- | 133 | ||
- | 134 | extern struct descriptor gdt[]; |
|
- | 135 | extern struct idescriptor idt[]; |
|
- | 136 | ||
- | 137 | extern void pm_init(void); |
|
- | 138 | ||
- | 139 | extern void gdt_setbase(struct descriptor *d, __address base); |
|
- | 140 | extern void gdt_setlimit(struct descriptor *d, __u32 limit); |
|
- | 141 | ||
- | 142 | extern void idt_init(void); |
|
- | 143 | extern void idt_setoffset(struct idescriptor *d, __address offset); |
|
- | 144 | ||
- | 145 | extern void tss_initialize(struct tss *t); |
|
- | 146 | ||
- | 147 | #endif |